Journal of Horticulture
Open Access

Shawn Steffan

Publications

• Research Article
  Toxicity of Chelated Iron (Fe-DTPA) in American Cranberry
  Author(s): Sarah Siebach, Giovanny Covarrubias-Pazaran, Rebecca Harbut, Beth Workmaster, Lisa Wasko DeVetter, Shawn Steffan, Christelle Guédot, Amaya Atucha and Juan ZalapaSarah Siebach, Giovanny Covarrubias-Pazaran, Rebecca Harbut, Beth Workmaster, Lisa Wasko DeVetter, Shawn Steffan, Christelle Guédot, Amaya Atucha and Juan Zalapa
  
  American cranberry (Vaccinium macrocarpon) is naturally adapted to environments with high concentrations of soluble iron. Yet, there is a need to further explore iron nutrition in cranberry given concerns of toxicity problems from irrigation with iron-rich water. This study investigated the threat of iron toxicity by evaluating its effects on shoot growth total shoot weight, length (primary shoot and axillary growth), and number of axillary shoots in cranberry plants exposed to varying levels of a commonly used chelated iron, specifically Sequestrene 330 (ferric diethylenetriamine penta-acetate; Fe-DTPA). Cranberry plants were grown under controlled greenhouse conditions and received varying concentrations of Fe-DTPA in their irrigation water solutions. Four treatments of Fe-DTPA were applied (0, 14 ppm, 28 ppm, 56 ppm Fe), and shoot growth measurements were taken weekly over the cour.. View More»
  DOI: 10.4172/2376-0354.1000128

  Abstract PDF

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